01366 Area Code — Downham Market, Wimbotsham & Hilgay

01366 is the UK dialling code for Downham Market in Norfolk, also serving Wimbotsham, Hilgay and Stoke Ferry, allocated by Ofcom under the National Telephone Numbering Plan. Our database has tracked 73 distinct 01366 numbers across 106 public lookups.

Quick facts

About the 01366 dialling code

01366 is the UK geographic dialling code for Downham Market, allocated by Ofcom under the National Telephone Numbering Plan. It is used by landlines — and increasingly VoIP lines — registered to the Downham Market area.

A full Downham Market number is normally written as 01366 XXXXXX. You can dial the local part on its own from within the same area, or the full number from anywhere in the UK.

Because of UK number portability and internet calling, a 01366 number no longer guarantees the caller is physically in Downham Market. Fraudsters also "spoof" local codes like 01366 so an unknown call looks like a nearby business or neighbour — so treat an unexpected call on what is actually said, not on the area code alone.

Map of the 01366 dialling area

The marker shows Downham Market; the shaded circle is an approximate indication of the area the 01366 code serves — exact Ofcom charging-area boundaries are irregular and don't follow a neat radius.

Map data © OpenStreetMap contributors. View larger map

Areas typically served by 01366

Settlements in and around the Downham Market dialling area that typically use 01366 numbers. Approximate — Ofcom charging-area boundaries don't follow town or county lines exactly, and properties near a boundary may take a neighbouring code.

Calling 01366 from abroad

From outside the UK, dial your international access prefix, then the UK country code 44, then 1366 (the area code without its leading zero) and the local number.

History of the 01366 code

The code was 0366 until PhONEday, 16 April 1995, when a "1" was inserted after the leading zero to create 01366.

In the letter-dialling era the code had the mnemonic DO6 — on an old rotary dial, the letters DO (from Downham Market) sat on the same holes as the digits 366, so subscribers literally dialled the start of the town's name.

Top searched 01366 numbers

These are the 01366 numbers most-looked-up by visitors to our number checker. Click any number to see its full lookup page with risk-level, range holder, and community reports.

Is a call from 01366 safe?

Most 01366 calls are ordinary local calls from Downham Market homes and businesses. The main risk to be aware of is "neighbour spoofing", where a scammer fakes a local 01366 prefix so you are more likely to answer. Never share bank details, passwords or one-time security codes with an unexpected caller, even when the number looks local — hang up and call the organisation back on a number you have verified yourself.

To call a 01366 (Downham Market) number from outside the UK, drop the leading zero and dial +44 1366 followed by the local number.

Operators serving Downham Market

These UK communications providers have been allocated 01366 number blocks by Ofcom. The number of blocks per operator gives a rough sense of how widely each provider serves this area.

Ofcom number ranges on 01366

Ofcom's National Numbering Plan lists 415 number blocks under 01366, of which 107 are allocated to 90 communications providers. The first allocated blocks are shown below — look up any full number with the number checker to see its exact range holder.

Showing 12 of 107 allocated blocks. Source: Ofcom telephone numbering data, updated weekly.

How to block and report 01366 spam calls

Block or report 01366

• You can block 01366 directly from your recent-calls list on iPhone or Android, and forward scam texts free to 7726.
• Scam or fraud calls should be reported to Action Fraud (0300 123 2040) or Police Scotland (101); persistent marketing calls to the ICO / TPS.

Full step-by-step instructions for every phone, network-level blocking and all UK reporting routes are in our guide: How to block and report unwanted calls in the UK.

Frequently asked questions about the 01366 code

Neighbouring dialling codes

Codes covering areas around Downham Market — useful when a caller is nearby but outside the 01366 boundary.

Living in or moving to Downham Market?

Our free postcode reports cover house prices, crime, broadband and schools for the districts around Downham Market.

Check another UK number

Have the full 10- or 11-digit number? The UK Phone Number Checker shows the Ofcom range holder, risk level, and any community reports for that specific number.